如何編輯 Powershell 腳本以在出現錯誤時繼續?

如何編輯 Powershell 腳本以在出現錯誤時繼續?

我修改了這個腳本(https://gallery.technet.microsoft.com/scriptcenter/Create-HTML-Uptime-and-68e6acc0)來存取多個伺服器,但即使只有一個系統關閉,它也不會產生報告。如何修改腳本以繼續出現錯誤並在最後產生報告?錯誤是:

Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
At C:\Users\user\Desktop\CheckDiskSpaceDomain\GetDiskDriveSpaceDomain.ps1:19 char:25
+      $os = Get-WmiObject <<<<  -class win32_OperatingSystem -cn $s
    + CategoryInfo          : InvalidOperation: (:) [Get-WmiObject], COMException
    + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

You cannot call a method on a null-valued expression.
At C:\Users\user\Desktop\CheckDiskSpaceDomain\GetDiskDriveSpaceDomain.ps1:21 char:51
+        uptime = (get-date) - $os.converttodatetime <<<< ($os.lastbootuptime)}
    + CategoryInfo          : InvalidOperation: (converttodatetime:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

答案1

看起來您在執行 get-wmiObject 時遇到了問題,在呼叫之後只需編寫

-ErrorAction "Resume"

看起來 $OS 實際上是空值,所以你可能想做這樣的事情來知道 $s 是否為空並決定要做什麼:

if ($OS -ne $null){ 
    $uptime = (get-date) - $os.converttodatetime 
    }
else {
    write-host " OS is null" 
     } 

有關錯誤處理的更多資訊:

http://blogs.msdn.com/b/kebab/archive/2013/06/09/an-introduction-to-error-handling-in-powershell.aspx

答案2

嘗試使用 -erroraction 靜默繼續

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